Introduction
Welcome to Flex! The easiest way to start accepting HSA/FSA Payments
Flex
Flex offers a hosted checkout page to integrate HSA/FSA payments directly in your existing payments flow.
Flex offers two paths to accept HSA/FSA cards at checkout.
Auto Substantiation
If you are an ecommerce store selling HSA/FSA eligible items, you are required by the IRS to use an Inventory Information Approval System(IIAS). This system must auto-substantiate HSA/FSA transactions at the point of sale in order for consumers to use their HSA/FSA cards. Flex offers this system for our merchants.
Letter of Medical Necessity
If you are a wellness business (fitness, nutrition, sleep, etc), your product or service may not be explicitly eligbilbe by the IRS. Consumers must receive a Letter of Medical Necessity from a physician deeming your product medically necessary before you can accept HSA/FSA funds. Flex is able to issue a Letter of Medical Necessity directly in the checkout flow, providing a seamless and compliant checkout experience for your users.
Integration
Flex provides an API based integration and a shopify payments app making it easy to get started!
For API based integration, start here.
For our shopify payments app, start here.